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| -rw-r--r-- | include/tools/multisel.hxx | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/include/tools/multisel.hxx b/include/tools/multisel.hxx new file mode 100644 index 000000000..ea7a1343f --- /dev/null +++ b/include/tools/multisel.hxx @@ -0,0 +1,170 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ +#ifndef INCLUDED_TOOLS_MULTISEL_HXX +#define INCLUDED_TOOLS_MULTISEL_HXX + +#include <tools/toolsdllapi.h> +#include <tools/gen.hxx> +#include <rtl/ustring.hxx> + +#include <cstddef> +#include <vector> +#include <o3tl/sorted_vector.hxx> + +#define SFX_ENDOFSELECTION (-1) + +class SAL_WARN_UNUSED TOOLS_DLLPUBLIC MultiSelection +{ +private: + std::vector< Range > + aSels; // array of SV-selections + Range aTotRange; // total range of indexes + std::size_t nCurSubSel; // index in aSels of current selected index + sal_Int32 nCurIndex; // current selected entry + sal_Int32 nSelCount; // number of selected indexes + bool bCurValid; // are nCurIndex and nCurSubSel valid + + TOOLS_DLLPRIVATE void ImplClear(); + TOOLS_DLLPRIVATE std::size_t ImplFindSubSelection( sal_Int32 nIndex ) const; + TOOLS_DLLPRIVATE void ImplMergeSubSelections( sal_Int32 nPos1, std::size_t nPos2 ); + +public: + MultiSelection(); + MultiSelection( const MultiSelection& rOrig ); + MultiSelection( const Range& rRange ); + ~MultiSelection(); + + MultiSelection& operator= ( const MultiSelection& rOrig ); + + void SelectAll( bool bSelect = true ); + bool Select( sal_Int32 nIndex, bool bSelect = true ); + void Select( const Range& rIndexRange, bool bSelect = true ); + bool IsSelected( sal_Int32 nIndex ) const; + bool IsAllSelected() const + { return nSelCount == aTotRange.Len(); } + sal_Int32 GetSelectCount() const { return nSelCount; } + + void SetTotalRange( const Range& rTotRange ); + void Insert( sal_Int32 nIndex, sal_Int32 nCount = 1 ); + void Remove( sal_Int32 nIndex ); + void Reset(); + + const Range& GetTotalRange() const { return aTotRange; } + sal_Int32 FirstSelected(); + sal_Int32 LastSelected(); + sal_Int32 NextSelected(); + + sal_Int32 GetRangeCount() const { return aSels.size(); } + const Range& GetRange( sal_Int32 nRange ) const { return aSels[nRange]; } +}; + +class SAL_WARN_UNUSED TOOLS_DLLPUBLIC StringRangeEnumerator +{ + struct Range + { + sal_Int32 nFirst; + sal_Int32 nLast; + + Range( sal_Int32 i_nFirst, sal_Int32 i_nLast ) : nFirst( i_nFirst ), nLast( i_nLast ) {} + }; + std::vector< StringRangeEnumerator::Range > maSequence; + sal_Int32 mnCount; + sal_Int32 mnMin; + sal_Int32 mnMax; + sal_Int32 mnOffset; + bool mbValidInput; + + bool setRange( std::u16string_view i_rNewRange ); + bool insertRange( sal_Int32 nFirst, sal_Int32 nLast, bool bSequence ); + void insertJoinedRanges( const std::vector< sal_Int32 >& rNumbers ); + bool checkValue( sal_Int32, const o3tl::sorted_vector< sal_Int32 >* i_pPossibleValues = nullptr ) const; +public: + class TOOLS_DLLPUBLIC Iterator + { + const StringRangeEnumerator* pEnumerator; + const o3tl::sorted_vector< sal_Int32 >* pPossibleValues; + sal_Int32 nRangeIndex; + sal_Int32 nCurrent; + + friend class StringRangeEnumerator; + Iterator( const StringRangeEnumerator* i_pEnum, + const o3tl::sorted_vector< sal_Int32 >* i_pPossibleValues, + sal_Int32 i_nRange, + sal_Int32 i_nCurrent ) + : pEnumerator( i_pEnum ), pPossibleValues( i_pPossibleValues ) + , nRangeIndex( i_nRange ), nCurrent( i_nCurrent ) {} + + public: + Iterator& operator++(); + sal_Int32 operator*() const { return nCurrent;} + bool operator==(const Iterator&) const; + bool operator!=(const Iterator& i_rComp) const + { return ! (*this == i_rComp); } + }; + + friend class StringRangeEnumerator::Iterator; + + StringRangeEnumerator( std::u16string_view i_rInput, + sal_Int32 i_nMinNumber, + sal_Int32 i_nMaxNumber, + sal_Int32 i_nLogicalOffset = -1 + ); + + sal_Int32 size() const { return mnCount; } + Iterator begin( const o3tl::sorted_vector< sal_Int32 >* i_pPossibleValues = nullptr ) const; + Iterator end( const o3tl::sorted_vector< sal_Int32 >* i_pPossibleValues = nullptr ) const; + + bool hasValue( sal_Int32 nValue, const o3tl::sorted_vector< sal_Int32 >* i_pPossibleValues = nullptr ) const; + + /** + i_rPageRange: the string to be changed into a sequence of numbers + valid format example "5-3,9,9,7-8" ; instead of ',' ';' or ' ' are allowed as well + o_rPageVector: the output sequence of numbers + i_nLogicalOffset: an offset to be applied to each number in the string before inserting it in the resulting sequence + example: a user enters page numbers from 1 to n (since that is logical) + of course usable page numbers in code would start from 0 and end at n-1 + so the logical offset would be -1 + i_nMinNumber: the minimum allowed number + i_nMaxNumber: the maximum allowed number + + @returns: true if the input string was valid, o_rPageVector will contain the resulting sequence + false if the input string was invalid, o_rPageVector will contain + the sequence that parser is able to extract + + behavior: + - only non-negative sequence numbers are allowed + - only non-negative values in the input string are allowed + - the string "-3" means the sequence i_nMinNumber to 3 + - the string "3-" means the sequence 3 to i_nMaxNumber + - the string "-" means the sequence i_nMinNumber to i_nMaxNumber + - single number that doesn't fit in [i_nMinNumber,i_nMaxNumber] will be ignored + - range that doesn't fit in [i_nMinNumber,i_nMaxNumber] will be adjusted + */ + static bool getRangesFromString( std::u16string_view i_rPageRange, + std::vector< sal_Int32 >& o_rPageVector, + sal_Int32 i_nMinNumber, + sal_Int32 i_nMaxNumber, + sal_Int32 i_nLogicalOffset = -1, + o3tl::sorted_vector< sal_Int32 > const * i_pPossibleValues = nullptr + ); +}; + +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |